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<a href="#func-members">Functions</a>  </div>
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<div class="title">remap.cl File Reference</div>  </div>
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<div class="textblock"><code>#include &quot;<a class="el" href="helpers_8h_source.xhtml">helpers.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="warp__helpers_8h_source.xhtml">warp_helpers.h</a>&quot;</code><br />
</div>
<p><a href="remap_8cl_source.xhtml">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a786803611cc128275d32d9584376713e"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="remap_8cl.xhtml#a786803611cc128275d32d9584376713e">remap_nearest_neighbour</a> (__global uchar *in_ptr, uint in_stride_x, uint in_step_x, uint in_stride_y, uint in_step_y, uint in_offset_first_element_in_bytes, __global uchar *out_ptr, uint out_stride_x, uint out_step_x, uint out_stride_y, uint out_step_y, uint out_offset_first_element_in_bytes, __global uchar *mapx_ptr, uint mapx_stride_x, uint mapx_step_x, uint mapx_stride_y, uint mapx_step_y, uint mapx_offset_first_element_in_bytes, __global uchar *mapy_ptr, uint mapy_stride_x, uint mapy_step_x, uint mapy_stride_y, uint mapy_step_y, uint mapy_offset_first_element_in_bytes, const float width, const float height)</td></tr>
<tr class="memdesc:a786803611cc128275d32d9584376713e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Performs a remapping of an input image to an output given two remapping image using nearest neighbor as interpolation.  <a href="#a786803611cc128275d32d9584376713e">More...</a><br /></td></tr>
<tr class="separator:a786803611cc128275d32d9584376713e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1d771133d1dfea450fdbacda1c34ce49"><td class="memItemLeft" align="right" valign="top">__kernel void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="remap_8cl.xhtml#a1d771133d1dfea450fdbacda1c34ce49">remap_bilinear</a> (__global uchar *in_ptr, uint in_stride_x, uint in_step_x, uint in_stride_y, uint in_step_y, uint in_offset_first_element_in_bytes, __global uchar *out_ptr, uint out_stride_x, uint out_step_x, uint out_stride_y, uint out_step_y, uint out_offset_first_element_in_bytes, __global uchar *mapx_ptr, uint mapx_stride_x, uint mapx_step_x, uint mapx_stride_y, uint mapx_step_y, uint mapx_offset_first_element_in_bytes, __global uchar *mapy_ptr, uint mapy_stride_x, uint mapy_step_x, uint mapy_stride_y, uint mapy_step_y, uint mapy_offset_first_element_in_bytes, const float width, const float height)</td></tr>
<tr class="memdesc:a1d771133d1dfea450fdbacda1c34ce49"><td class="mdescLeft">&#160;</td><td class="mdescRight">Performs a remapping of an input image to an output given two remapping image using bilinear as interpolation.  <a href="#a1d771133d1dfea450fdbacda1c34ce49">More...</a><br /></td></tr>
<tr class="separator:a1d771133d1dfea450fdbacda1c34ce49"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="a1d771133d1dfea450fdbacda1c34ce49"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">__kernel void remap_bilinear </td>
          <td>(</td>
          <td class="paramtype">__global uchar *&#160;</td>
          <td class="paramname"><em>in_ptr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_stride_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_step_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_stride_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_step_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_offset_first_element_in_bytes</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">__global uchar *&#160;</td>
          <td class="paramname"><em>out_ptr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_stride_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_step_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_stride_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_step_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_offset_first_element_in_bytes</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">__global uchar *&#160;</td>
          <td class="paramname"><em>mapx_ptr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_stride_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_step_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_stride_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_step_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_offset_first_element_in_bytes</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">__global uchar *&#160;</td>
          <td class="paramname"><em>mapy_ptr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_stride_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_step_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_stride_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_step_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_offset_first_element_in_bytes</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const float&#160;</td>
          <td class="paramname"><em>width</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const float&#160;</td>
          <td class="paramname"><em>height</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Performs a remapping of an input image to an output given two remapping image using bilinear as interpolation. </p>
<p>This kernel performs remapping with this method of pixel coordinate translation: out(x,y) = in(mapx(x,y), mapy(x,y));</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">in_ptr</td><td>Pointer to the source image. Supported data types: U8. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_step_x</td><td>in_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_step_y</td><td>in_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_offset_first_element_in_bytes</td><td>Offset of the first element in the source image </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">out_ptr</td><td>Pointer to the destination image. Supported data types: U8. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_step_x</td><td>out_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_step_y</td><td>out_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_offset_first_element_in_bytes</td><td>Offset of the first element in the destination image </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_ptr</td><td>Pointer to the x remapping image. Supported data types: F32. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_stride_x</td><td>Stride of the remapping image in X dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_step_x</td><td>mapx_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_stride_y</td><td>Stride of the remapping image in Y dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_step_y</td><td>mapy_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_offset_first_element_in_bytes</td><td>Offset of the first element in the remapping image </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_ptr</td><td>Pointer to the x remapping image. Supported data types: F32. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_stride_x</td><td>Stride of the remapping image in X dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_step_x</td><td>mapy_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_stride_y</td><td>Stride of the remapping image in Y dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_step_y</td><td>mapy_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_offset_first_element_in_bytes</td><td>Offset of the first element in the remapping image </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">width</td><td>Width of the input image </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">height</td><td>Height of the input image </td></tr>
  </table>
  </dd>
</dl>

<p>Definition at line <a class="el" href="remap_8cl_source.xhtml#l00113">113</a> of file <a class="el" href="remap_8cl_source.xhtml">remap.cl</a>.</p>

<p>References <a class="el" href="warp__helpers_8h_source.xhtml#l00135">bilinear_interpolate()</a>, <a class="el" href="warp__helpers_8h_source.xhtml#l00048">clamp_to_border()</a>, <a class="el" href="helpers_8h_source.xhtml#l00104">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00107">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>, and <a class="el" href="helpers_8h_source.xhtml#l00144">Image::ptr</a>.</p>
<div class="fragment"><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;{</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> in   = <a class="code" href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>(in);</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> out  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(out);</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> mapx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(mapx);</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> mapy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(mapy);</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    float4 mapx_coords = vload4(0, (__global <span class="keywordtype">float</span> *)mapx.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    float4 mapy_coords = vload4(0, (__global <span class="keywordtype">float</span> *)mapy.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    float8 map_coords  = (float8)(mapx_coords.s0, mapy_coords.s0, mapx_coords.s1, mapy_coords.s1,</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;                                  mapx_coords.s2, mapy_coords.s2, mapx_coords.s3, mapy_coords.s3);</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    vstore4(<a class="code" href="warp__helpers_8h.xhtml#abea9f226daf3e0ad741d03cf7417d353">bilinear_interpolate</a>(&amp;in, <a class="code" href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a>(map_coords, width, height), width, height), 0, out.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;}</div><div class="ttc" id="warp__helpers_8h_xhtml_adbdf2ca9e8fe0b67f9359929ef743126"><div class="ttname"><a href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a></div><div class="ttdeci">const float8 clamp_to_border(float8 coords, const float width, const float height)</div><div class="ttdoc">Clamps the given coordinates to the borders. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00048">warp_helpers.h:48</a></div></div>
<div class="ttc" id="helpers_8h_xhtml_a4334a4a76f8e9628c0fb9e1acf616e2a"><div class="ttname"><a href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT_NO_STEP(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00107">helpers.h:107</a></div></div>
<div class="ttc" id="helpers_8h_xhtml_aebe814363556c244be043b13e7969197"><div class="ttname"><a href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00104">helpers.h:104</a></div></div>
<div class="ttc" id="struct_image_xhtml"><div class="ttname"><a href="struct_image.xhtml">Image</a></div><div class="ttdoc">Structure to hold Image information. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00142">helpers.h:142</a></div></div>
<div class="ttc" id="struct_image_xhtml_acf52c23cbd7424606c10a606524e3e32"><div class="ttname"><a href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">Image::ptr</a></div><div class="ttdeci">__global uchar * ptr</div><div class="ttdoc">Pointer to the starting postion of the buffer. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00144">helpers.h:144</a></div></div>
<div class="ttc" id="warp__helpers_8h_xhtml_abea9f226daf3e0ad741d03cf7417d353"><div class="ttname"><a href="warp__helpers_8h.xhtml#abea9f226daf3e0ad741d03cf7417d353">bilinear_interpolate</a></div><div class="ttdeci">const DATA_TYPE4 bilinear_interpolate(const Image *in, const float8 coords, const float width, const float height)</div><div class="ttdoc">Computes the bilinear interpolation for each set of coordinates in the vector coords and returns the ...</div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00135">warp_helpers.h:135</a></div></div>
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      <table class="memname">
        <tr>
          <td class="memname">__kernel void remap_nearest_neighbour </td>
          <td>(</td>
          <td class="paramtype">__global uchar *&#160;</td>
          <td class="paramname"><em>in_ptr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_stride_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_step_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_stride_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_step_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>in_offset_first_element_in_bytes</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">__global uchar *&#160;</td>
          <td class="paramname"><em>out_ptr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_stride_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_step_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_stride_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_step_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>out_offset_first_element_in_bytes</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">__global uchar *&#160;</td>
          <td class="paramname"><em>mapx_ptr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_stride_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_step_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_stride_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_step_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapx_offset_first_element_in_bytes</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">__global uchar *&#160;</td>
          <td class="paramname"><em>mapy_ptr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_stride_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_step_x</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_stride_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_step_y</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">uint&#160;</td>
          <td class="paramname"><em>mapy_offset_first_element_in_bytes</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const float&#160;</td>
          <td class="paramname"><em>width</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const float&#160;</td>
          <td class="paramname"><em>height</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Performs a remapping of an input image to an output given two remapping image using nearest neighbor as interpolation. </p>
<p>This kernel performs remapping with this method of pixel coordinate translation: out(x,y) = in(mapx(x,y), mapy(x,y));</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">in_ptr</td><td>Pointer to the source image. Supported data types: U8. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_stride_x</td><td>Stride of the source image in X dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_step_x</td><td>in_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_stride_y</td><td>Stride of the source image in Y dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_step_y</td><td>in_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">in_offset_first_element_in_bytes</td><td>Offset of the first element in the source image </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">out_ptr</td><td>Pointer to the destination image. Supported data types: U8. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_x</td><td>Stride of the destination image in X dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_step_x</td><td>out_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_stride_y</td><td>Stride of the destination image in Y dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_step_y</td><td>out_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">out_offset_first_element_in_bytes</td><td>Offset of the first element in the destination image </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_ptr</td><td>Pointer to the x remapping image. Supported data types: F32. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_stride_x</td><td>Stride of the remapping image in X dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_step_x</td><td>mapx_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_stride_y</td><td>Stride of the remapping image in Y dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_step_y</td><td>mapy_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapx_offset_first_element_in_bytes</td><td>Offset of the first element in the remapping image </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_ptr</td><td>Pointer to the x remapping image. Supported data types: F32. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_stride_x</td><td>Stride of the remapping image in X dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_step_x</td><td>mapy_stride_x * number of elements along X processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_stride_y</td><td>Stride of the remapping image in Y dimension (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_step_y</td><td>mapy_stride_y * number of elements along Y processed per work item (in bytes) </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">mapy_offset_first_element_in_bytes</td><td>Offset of the first element in the remapping image </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">width</td><td>Width of the input image </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">height</td><td>Height of the input image </td></tr>
  </table>
  </dd>
</dl>

<p>Definition at line <a class="el" href="remap_8cl_source.xhtml#l00059">59</a> of file <a class="el" href="remap_8cl_source.xhtml">remap.cl</a>.</p>

<p>References <a class="el" href="warp__helpers_8h_source.xhtml#l00048">clamp_to_border()</a>, <a class="el" href="helpers_8h_source.xhtml#l00104">CONVERT_TO_IMAGE_STRUCT</a>, <a class="el" href="helpers_8h_source.xhtml#l00107">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>, <a class="el" href="helpers_8h_source.xhtml#l00144">Image::ptr</a>, and <a class="el" href="warp__helpers_8h_source.xhtml#l00058">read_texels4()</a>.</p>
<div class="fragment"><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;{</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> in   = <a class="code" href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a>(in);</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> out  = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(out);</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> mapx = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(mapx);</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <a class="code" href="struct_image.xhtml">Image</a> mapy = <a class="code" href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a>(mapy);</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    float4 mapx_coords = vload4(0, (__global <span class="keywordtype">float</span> *)mapx.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    float4 mapy_coords = vload4(0, (__global <span class="keywordtype">float</span> *)mapy.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    float8 map_coords  = (float8)(mapx_coords.s0, mapy_coords.s0, mapx_coords.s1, mapy_coords.s1,</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;                                  mapx_coords.s2, mapy_coords.s2, mapx_coords.s3, mapy_coords.s3);</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    map_coords += (float8)(0.5f);</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    vstore4(<a class="code" href="warp__helpers_8h.xhtml#aba42442a4c991cdbb52727fa370676f1">read_texels4</a>(&amp;in, convert_int8(<a class="code" href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a>(map_coords, width, height))), 0, out.<a class="code" href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">ptr</a>);</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;}</div><div class="ttc" id="warp__helpers_8h_xhtml_adbdf2ca9e8fe0b67f9359929ef743126"><div class="ttname"><a href="warp__helpers_8h.xhtml#adbdf2ca9e8fe0b67f9359929ef743126">clamp_to_border</a></div><div class="ttdeci">const float8 clamp_to_border(float8 coords, const float width, const float height)</div><div class="ttdoc">Clamps the given coordinates to the borders. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00048">warp_helpers.h:48</a></div></div>
<div class="ttc" id="helpers_8h_xhtml_a4334a4a76f8e9628c0fb9e1acf616e2a"><div class="ttname"><a href="helpers_8h.xhtml#a4334a4a76f8e9628c0fb9e1acf616e2a">CONVERT_TO_IMAGE_STRUCT_NO_STEP</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT_NO_STEP(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00107">helpers.h:107</a></div></div>
<div class="ttc" id="helpers_8h_xhtml_aebe814363556c244be043b13e7969197"><div class="ttname"><a href="helpers_8h.xhtml#aebe814363556c244be043b13e7969197">CONVERT_TO_IMAGE_STRUCT</a></div><div class="ttdeci">#define CONVERT_TO_IMAGE_STRUCT(name)</div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00104">helpers.h:104</a></div></div>
<div class="ttc" id="struct_image_xhtml"><div class="ttname"><a href="struct_image.xhtml">Image</a></div><div class="ttdoc">Structure to hold Image information. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00142">helpers.h:142</a></div></div>
<div class="ttc" id="struct_image_xhtml_acf52c23cbd7424606c10a606524e3e32"><div class="ttname"><a href="struct_image.xhtml#acf52c23cbd7424606c10a606524e3e32">Image::ptr</a></div><div class="ttdeci">__global uchar * ptr</div><div class="ttdoc">Pointer to the starting postion of the buffer. </div><div class="ttdef"><b>Definition:</b> <a href="helpers_8h_source.xhtml#l00144">helpers.h:144</a></div></div>
<div class="ttc" id="warp__helpers_8h_xhtml_aba42442a4c991cdbb52727fa370676f1"><div class="ttname"><a href="warp__helpers_8h.xhtml#aba42442a4c991cdbb52727fa370676f1">read_texels4</a></div><div class="ttdeci">const DATA_TYPE4 read_texels4(const Image *in, const int8 coords)</div><div class="ttdoc">Reads four texels from the input image. </div><div class="ttdef"><b>Definition:</b> <a href="warp__helpers_8h_source.xhtml#l00058">warp_helpers.h:58</a></div></div>
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